SOLUTION: The mean of twelve consecutive numbers is 3, and when another number is being added the result is 5. What is the thirteent number?
Algebra.Com
Question 614891: The mean of twelve consecutive numbers is 3, and when another number is being added the result is 5. What is the thirteent number?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
The mean of twelve consecutive numbers is 3,
That means the total value of the 12 numbers is +36
:
when another number is being added the result is 5. What is the thirteenth number?
let x = the value of the 13th number
:
= 5
36 + x = 5(13)
x = 65 - 36
x = 29 is the 13th number
RELATED QUESTIONS
the mean of six numbers is 10. When another number is added the mean changes to 9. What... (answered by Cromlix)
the mean of ten positive numbers is 16. When another number is added the mean is 18. find (answered by ikleyn,greenestamps)
A certain number is four times another number. When six is added to the sum of the two... (answered by stanbon)
A set of 9 numbers {3, 3, 4, 5, 5, 5, 6, 7, 7} has a mean of 5. Another number is added... (answered by ikleyn)
The mean of ten positive numbers is 16 .when. another is added the mean becomes 18 find... (answered by solver91311,ikleyn)
the mean of five positive numbers is 4 when another number is added ,the mean number... (answered by ikleyn)
Twelve is the geometric mean of 9 and what number?
(answered by JBarnum)
When the smaller of two consecutive odd numbers is tripled and added to the larger, the... (answered by Fombitz)
can you guys help me again....
2. Five times the first of two consecutive integers... (answered by greenestamps,josgarithmetic)